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Finding the Fourth Proportional to 153,811.80, 230,536.80 and 69,473.52

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Solution

The fourth proportional to 153,811.80, 230,536.80 and 69,473.52 is: 104,128.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,811.80 : 230,536.80 = 69,473.52 : x
  2. Step 2: Convert to fraction form
    153,811.80/230,536.80 = 69,473.52/x
  3. Step 3: Cross multiply
    153,811.80x = 230,536.80 × 69,473.52
  4. Step 4: Simplify right side
    153,811.80x = 16,016,202,985.54
  5. Step 5: Solve for x
    x = 16,016,202,985.54/153,811.80
  6. Step 6: Final answer
    x = 104,128.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.